JavaScript: Calculate the Hamming distance between two values
JavaScript fundamental (ES6 Syntax): Exercise-219 with Solution
Write a JavaScript program to calculate the Hamming distance between two values.
- Use the XOR operator (^) to find the bit difference between the two numbers.
- Convert to a binary string using Number.prototype.toString(2).
- Count and return the number of 1s in the string, using String.prototype.match(/1/g).
Sample Solution:
JavaScript Code:
//#Source https://bit.ly/2neWfJ2
const hammingDistance = (num1, num2) => ((num1 ^ num2).toString(2).match(/1/g) || '').length;
console.log(hammingDistance(2, 3));
console.log(hammingDistance(5, 3));
Sample Output:
1 2
Flowchart:

Live Demo:
See the Pen javascript-basic-exercise-219-1 by w3resource (@w3resource) on CodePen.
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Next: Write a JavaScript program to get the native type of a value. Returns lowercased constructor name of value, "undefined" or "null" if value is undefined or null.
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JavaScript: Tips of the Day
How to check whether a string contains a substring in JavaScript?
ECMAScript 6 introduced String.prototype.includes:
const string = "foo"; const substring = "oo"; console.log(string.includes(substring));
includes doesn't have Internet Explorer support, though. In ECMAScript 5 or older environments, use String.prototype.indexOf, which returns -1 when a substring cannot be found:
var string = "foo"; var substring = "oo"; console.log(string.indexOf(substring) !== -1);
Ref: https://bit.ly/3fFFgZv
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